To keep it short and simple with the results; It held ice in cube form for 27.5 hours, one solid mass of ice for 36 hours and kept water hot for around 8 hours. Also I give my observation of the product and give a little science behind the idea.
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Insane: America's Criminal Treatment of Mental Illness
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Insane
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Unit of Difficult Patients: What Future for the Criminally Insane?
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I did an “unofficial” experiment between a double-walled vacuumed aluminum thermos and a double-walled vacuumed glass thermos. Glass did a lot better at keeping ice-water cold for a longer period of time. (The only drawback to glass though is, you have to be much more careful with it, which is difficult for me since I landscape in FL and farm in IL. I need rugged.) This was by no means as scientific an experiment as yours. I just need ice-cold water to stay as ice-cold as is possible out in the hot sun all day. Cool video! (P.S. Was wondering what kind of camera and editing software do you use to make your videos?)